形態特徵

• Rhizomes shout, short-creeping.
• Fronds approximate; stipes castaneous, 55-75 cm long, 0.5-1.1 cm in diameter, scaly at base, the scales broad and thin, brown; laminae linear-lanceolate, 1.1-1.5 m long, 15-51 cm wide, subcoriaceous; pinnae to about 50 pairs, linear-lanceolate, 7-25 cm long, 1.4-2.3 cm wide, glabrous in both surfaces; lower pinnae opposite and upper ones alternate, the lowest deflexed, the lower most gradually shortened to auricle-like reduced pinnae.
• Sori close to the margin, of few sporangia, with small indusia.

分布

• 台灣 : Growing in wet muddy places beside forests.

引證標本

NANTOU: Wanghsiang, Tsai 10379; Shanlinchi, Shieh & Tsai 9750.

參考文獻

• TSAI, JINN-LAI and SHIEH, WANG-CHUENG, Flora of Taiwan, second edition 1: 408. 1994.  (Fl. Taiwan 2nd edit.)